#374AB3#374AB3

#374AB3 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.8% C 0.167 H 270.6°. Best body text is #FFFFFF at 7.52:1 contrast (WCAG AA passes).

Color values

HEX	#374AB3
RGB	rgb(55, 74, 179)
HSL	hsl(231, 53%, 46%)
HSV	hsv(231, 69%, 70%)
CMYK	cmyk(69.3%, 58.7%, 0%, 29.8%)
CIE-LAB	lab(35.91, 28.16, -58.05)
CIE-LCH	lch(35.91, 64.52, 295.88°)
OKLab	oklab(45.84% 0.0016 -0.1673)
OKLCH	oklch(45.84% 0.167 270.6)
XYZ	xyz(12.1582, 8.9633, 43.7284)
Luminance	0.0896 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374AB3 #B3A037

analogous

#3788B3 #374AB3 #6237B3

triadic

#374AB3 #B3374A #4AB337

tetradic

#374AB3 #B33788 #B3A037 #37B362

square

#374AB3 #B33788 #B3A037 #37B362

split-complementary

#374AB3 #B36237 #88B337

monochromatic

#1A2355 #293784 #374AB3 #5B6CCD #8A96DB

Accessibility & contrast

On white

7.52

#374AB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#374AB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374AB3

7.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374AB3	#FFFFFF	#000000	##FFFFFF
##374AB3	1.00	7.52	2.79	7.52
#FFFFFF	7.52	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AB7

Deuteranopia (green-blind)

#004FB1

Tritanopia (blue-blind)

#006477

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #374ab3;
/* rgb */ color: rgb(55, 74, 179);
/* oklch */ color: oklch(45.8% 0.167 270.6);

Tailwind

colors: {
  custom: {
    50: '#7d7ccb',
    500: '#374ab3',
    950: '#000000',
  },
}

SCSS

$custom: #374ab3;
$custom-light: #7d7ccb;
$custom-dark: #000000;

JSON

{
  "hex": "#374ab3",
  "rgb": {
    "r": 55,
    "g": 74,
    "b": 179
  },
  "hsl": {
    "h": 230.806,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.45843,
    "c": 0.16731,
    "h": 270.6
  },
  "luminance": 0.08964
}

Semantic roles & 50–950 ramp

primary

#374AB3

secondary

#C5BB81

accent

#C64BDC

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #374AB3

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →